Rebamipide Impurity 43 CAS 1028268-32-7
| CAS No. | 1028268-32-7 |
| Molecular Formula | C24H23ClN2O6 |
| Molecular Weight | 470.90 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO supplies Rebamipide Impurity 43 (CAS 1028268-32-7), a pharmacopoeial impurity reference standard (molecular formula C24H23ClN2O6, MW 470.90 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Rebamipide Impurity 43 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 470.90 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C24H23ClN2O6 |
| Molecular Weight | 470.90 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Rebamipide Standards
- Rebamipide Impurity 46 (CAS CATO-C4X-152346)
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- Rebamipide Impurity 37 (CAS 1984832-97-4)
- Rebamipide Impurity 10 (CAS CATO-C4X-152310)
- Rebamipide Impurity 63 (CAS CATO-C4X-152363)
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- Rebamipide Impurity 41 (CAS CATO-C4X-152341)
- Rebamipide Impurity 45 (CAS CATO-C4X-152345)
Recommended Standards
- N-(2-chloro-5-(trifluoromethyl)phenyl)-2-((4-ethyl-5-(2-methoxyphenyl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 333423-33-9)
- 5-Chloro-N-(2-methoxy-4-(4-methylpiperazin-1-yl)phenyl)-4-(3-nitrophenoxy)pyrimidin-2-amine (CAS 1213269-25-0)
- 4-((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)oxy)-N-(4-isopropylphenyl)benzenesulfonamide (CAS 338775-57-8)
- 1-Benzyl-N'-[3-(2-chloro-6-fluorophenyl)-5-methyl-1,2-oxazole-4-carbonyl]piperidine-4-carbohydrazide (CAS 478064-36-7)
- Dexamethasone Impurity 86 (CAS 2796254-05-0)
- Esomeprazole Impurity 106 (CAS 110464-72-7)
- Flomoxef Impurity 4 (CAS 72591-95-8)
- 2-(2-((6-(((5-fluoro-6-methylpyridin-2-yl)oxy)methyl)-2-methylazepan-1-yl)methyl)-4-methylphenyl)oxazole (CAS 1224374-06-4)
- 2-Fluoro-6-methylpyrimidin-4-amine (CAS 18260-54-3)
- 5-Propyl-2-(pyridin-4-yl)benzo[d]oxazole (CAS 1192018-53-3)
- 3-(Difluoromethyl)-5-methylpyridine-2,6-diamine (CAS 1806806-10-9)
- methyl 3-fluorocyclobutanecarboxylate (CAS 1547065-03-1)
- Testosterone Impurity 43 (CAS CATO-C4X-243243)
- Urotensin II-Related Peptide (human, mouse, rat) (CAS 342878-90-4)
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